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. I' G. o. ANTHONI.' y A SYSTEM FOR THE ISOLATION 0F BUILDINGS,.&c.

.lfo. 440,938. Patented Nov. 18-, 1890.

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(No mmdlel.)V` l 2 sheets-sheet 2. G. C. ANTHONI. SYSTEM PORITIIE ISOLATION 0F BUILDINGS, dw.

Patented Nov. 18, 1890.'

No.44o,938.

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GUsrAvE' c'i-IARL'EsANTnoNI, o F' LEVALLois-rERRE'r, .FRANCE SYSTEM Foa 'rI-IIE ISOLATION or BUILDINGS, sto.

SPECIFICATION forming part of- Letters Patent No. 440,938, aateanovember 1s, i890'. Application med August 1s, 1888.' ssame. 282,697. nomas mensa in engen@ June 15, 183s, No. 3,796.

To. all whom it may' concern-a i Be itknown that l, GUs'rAvE CHARLES-ANL `have invent-cda System of Complete Isolation of Buildings and other Constructions,

or which Letters. Patent of Great Britain, dated June 15,- 1888, No. 8,796, and sealed .October 26,1888, were granted 4to n1 of which the following is a specification.

This invention relates to a system of coin plete isolationof constructions,machines, vehicles, and apparatus of all kinds with the object of deadening vibrations and shocks.

Rubber simply interposed between two parts to isolate one from the other has been employed for a long time to deaden shocks. and

vibrations.

The object of my invention is to construct .an adjustable isolated fastening which will hold the two `parts in their relative positions to each other andstill permit the tree action of the rubber.

s In theaccompanying drawings, Figure l is a cross-section of an isolated fastening according to my invention, where a single bolt is used. Fig. 2 isa similar view where a strap is used. Figs. 3, i, and 5 are sections of fastenings showing a dierent shape of rubber. Figs. 6 and 7 showthe application of the fast-- enings, and Fig. 8 is a detail relating to Fig. 7.

Thronghoutthe drawings S S indicate up'- per and S I lower surfaces.

To obtain complete isolation of two pieces 'tied together by elastic and isolating fastcnings, these' latter must 'be firmly fixed to one.

of the pieces, so that they are as of one piece therewith, and they must then be completely isolated from the other piece.V

rlhe principal ties or fastenings are the isolated bolt fixed at one end, Figs. 1 and 3,

or both ends, Figs. i and 5, or the stirrup, Fig. 2, isolated by a tube and two washers, or by one or two cones of india-rubber, Figs. l and 5. XVhatever may be the shape of the piece of india-rubber, it is necessary in inserting it between the rigid parts to insure its free expansion and'to give it a thickness suieient to prevent its flattening under the action of the shock. lt is also useful in ceri tain applications to protect it by a covering against theaction of oil or other agentswlneh 5 5 might-injurel itl. The' isolated bolt joins the two pieces together while vheaving'to 'the indiarubber all its elasticity. ATo isolate the bolt from. the piece which it is to attaclnan isolating-tube of india-rubber .6o t isinterposed, then two plugs', pads, or Washers ot' india-rubber at the two ends of the bolt. The. first or foundationwasher .F placed between the two' parts to b'e'isolated, and is calculated to support theweight. The 65 second orA reaction washer R is placed between thc piece to be isolated andthe washer of the nut.' This india-rubber washcijjdead- -ens the shock d ue to the reaction wnIcn-fol` lows thev flattening and. which without it 7o would break' the bolt. 'lhe-reaetion-washer may be tliinner than the foundation-Washer I because it has less to sup'port. Covers yr and -r spread the pressure over the two indiarubher washers and protect them from oil or 75 dirt.. 'lhepieee thus isolatedmay move in every direction without ever meeting thcbolt or its nut. i v

To exactly limit the squeezing or compression of the india-rubber, the tightening up of 8o the nut must be limited, either by screwing the nut E'close up te its washer 1, and on the shoulder limitingthe screw-tl-ircad of the bolt, or, which is preferable, by the use of a tie orcross-tube, Figs. l, 2, and li,plaeed around the 8 5 bolt, the stems of the strap or thescrew,'and within the isolating india-rubber tube. It is then certain that' the fitter cannot make a mistake and will be compelled to give the determined tightening. 'lhis cross-tubo is -of 9o suiiicient strength to resist the pressure of the nut, which may therefore be lirmly tightened closeup. Further, ita-hsolutely prevents the nut or the head of the bolt from' starting back against the piece to be isolated '95 which may happen with the limited screwthread. The bol't is securely fixed to o'ne'of the piecesl in various ways-by rivcting,by screwing it close against its shoulder with a shoulder .or collar and counter-nut, or with roo the erossftnbe, which is the simplest means.

The strap is'ixe'd in like manner by two cross 

